Nut wrench



Aug. 7, 1923.

L. COES NUT WRENCH Filed F'eb. 24. 1922 srar rent oFFicE.

LORING GOES, OF WORCESTER, MASSACHUSETTS, ASSIGNOR OF ONE-HALE TO COES WRENCH COMPANY, OF WORCESTER, MASSACHUSETTS,

MASSACHUSETTS.

A CORPORATION OF NUT WRENCH.

Application filed February 24, 1922.

T 0 all whom it may concern:

Be it known that I, Loni'ivo Cons, a citizen of the United States, residing at VOICES- ter, in the countyof Worcester and State of Massachusetts, have invented certain new and useful Improvements in Nut Wrenches, of which the following is a specification.

This invention relates to an improved construction in wrenches adapted for use upon nuts or bolt-heads of angular shape; the object being to aiford a simple, inexpensive and efficient wrench provided with means as set forth capable of effecting strong sure grip on the nut when the handle is moved in the direction for applying force for turning the nut, but readily releasable to permit the wrench to swing about the nut when the handle is moved in the opposite direction; said wrench consisting of a handle bar having an elongated end-member shaped to normally fit a nut 01" bolt-head of a given size and angular form, the elongated portion being yieldable or adapted for inwardly springing action for assuming a normal position, and having its extremity terminating adjacent the offset end of the handlebar, and disposed for seating against the side face of the nut, and for unattached contact with an abutting portion of the handle-bar, as more fully hereinafter described.

I attain these objects by the peculiar constriction explained in the following detailed description and illustrated in the accompanying drawings, wherein Fig, 1 represents a side view of a wrench embodying my invention; Fig. 2 represents a front edge view of the same; Fig. 3 shows a modification, and also illustrates an adaptation of the invention in a double end wrench; and Fig. 4L is a diagrammatic view illustrating action.

Referring to the drawings, numeral 1 indicates the handle-bar made of metal and of suitable shape to be conveniently gripped by the hand. Upon the end of said handlebar there is provided an elongation 2 projecting longitudinally from one edge thereof, preferably of a width equal to or slightly greater than the thickness of said bar, and having a comparatively thin cross-section disposed edgewise-up as indicated, said elongated portion is shaped to lit the sides Serial No. 538,969.

and angles of a ploygonal nut of a given size; the bends and facets of the elongated member being arranged and disposed to form a nut-embracing matrix that normally will readily pass over and approximately counter-match with the angles and side faces of the nut.

The extremity of the elongated portion is inclined inward and terminates adjacent to the end of the handle-bar, with a squared edge or facet 3 that is unattaehedly disposed in relation to the bar while the end of the handle-bar, is so shaped as to afford a comatching offset block or inclined abutment surface a, which when force is applied in the tightening of a nut, will act to clamp the end part 3 of the elongated member 2, and prevent its slipping while tension continues. The face of said abutment block is best ,recessed and formed with a lug 5 so that the side of the embraced nut, will rest partly on the member 3 and partly against the lug or end of handle-bar, thus positioning relatively one angle of the nut. The lug 5 prevents the inward closure of the matrix beyond its normal nut-receiving position, when oif the work. The incline of the abutment surface in relation to the projection of the elongated member 2 is made to correspond with the incline of the nut surface.

The wrench matrix may be made in different instances, for accommodating hexagonal, octagonal, pentagonal or other angular shaped nuts, and for nuts of different diametric size, as required in any particular instance.

The elongated portion 2, is tempered or treated to render it resilient or adapted for spring action, so as to afford a suitable degree of outward yield, and to immediately assume its normal position, as indicated in Figs. 1 and 3, as soon as opposing force is removed therefrom.

The projecting member 2 forming the nutengaging head of the wrench, may be made integral with the handle-bar 1, (see Fig. 1) or in other instances it may be made (as indicated in Fig. 3) from a separate rod or strip of steel or sheet stock, shaped to match the contour of the angular nut of a given size, its rear end 20 seated upon and rigidly or permanently attached to the handle-bar I wrench.

by means of rivets 6, screws, welding (electric or gas), or by any eflicient means of attachment; the wrench being practically a single structure or unitary formed instrument.

The handle-bar l is preferably paneled upon its sides as at 7 to lighten its weight; and it may when desired be provided with corrugations 9 on its edge, or edges, to facilitate the grip of the hand thereon.

This wrench may be used either side up, and is adapted topass flatwise onto the nut or bolt-head. l/Vhen the handle-bar is moved in the direction for applying force to operate the nut (indicated by arrow F) the abutment 4t clamps the extremity 3 of the nut-embracing member firmly between a face of the nut 10 and the abutment surface, thereby keeping the nut-embracing member 2 closed about the nut and causing the latter to be turned with the movement of the But when the handle-bar is moved in an opposite direction, or as indicated by the arrow G, then the extremity 3 of the nutembracing member is relieved from pressure by the abutment l and the spring capacity of the embracing member allows it to yield outward,by action of the angles of the nut against its interior faces,as illustrated by Fig. 4L,thus permitting the wrench to swing around the nut, to a position for taking a new hold, without causing a backward movement of the nut.

The resilience of the. nut-embracing mem ber causes it to assume its normal position with the angles brought into (Jo-matching relation to the form of the nut; the lug 5 serving as a stop for limiting the inward closure'of the member at the normal position.

To reverse the direction in which the nut or bolt is turned, it is simply necessary to place the wrench thereon with its opposite side up.

What I claim is 1. A nut wrench consisting of a handlebar with an offset end-face abutment, and provided with an elongated member projecting therefrom and shaped to fit an angular nut of a given size, one end of said member permanently attached to the handle-bar, its other end unattachedly terminating adjacent to the offset end of said bar, its end portion being disposed to normally seat against said abutment face, substantially as set forth.

2. A nut wrench comprising a handle-bar provided at its end with a protuberant abutment having an inclined end face, and an elongated member shaped to embrace the sides and angles of a polygon shaped nut, one end of said nut-embracing member being attached to and project from the handle-bar in angular relation to said abutment face, its other end inwardly inclined and unattachedly disposed adjacent to said abutment surface; said member being spring-tempered to afford resilient action for yielding and returning to normal inward-closed position.

3. In a wrench of the character described, the handle-bar having the yieldable nut-embracing member, and offset end abutment, its abutting surface formed with a recess for the reception of the unattached extremity of the nut-embracing member, and provided with a lug adjacent thereto adapted as a limiting stop for the end of the nut-embracing member; the seat for the side of the nut being partly on the unattached extremity of said nut-embracing member and partly on said lug. I

In testimony whereof I affix my signature this 16th day of February, A. D. 1922.

LORING GOES. 

